Best units of each faction:
Swadians: Mounted knights(Swadians have medium crossbowmen, lame infantry and good Heavy cavarly)
Nords: Huscarls (Superior Infantry, medium archers)
Khergits: Horse archers (Superior light and missile cavarly)
Vaegirs: Marksmen (Medium infantry, Good archers, medium horsemen)
Rhodok: Sharpshooters (Poor spearmen, Superior crossbowmen, sergeants are overrated)
Best factions in order:
1st. Khergits (their only weakness are the sieges, where they're not allowed to bring their horses)
2nd. Nords (lack of cavarly units, archers aint too shabby)
3rd. Vaegirs (Medium all around)
4th. Swadians (their infantry sucks)
5th. Rhodoks (If wasnt for the crossbowmen they wouldnt have a fighting chance against Mountain Bandits)